Clinical trial Recruiting at 266 sites Phase 3 Interventional Ages 18 and up Women only

Sacituzumab tirumotecan plus pembrolizumab versus pembrolizumab alone for pMMR endometrial cancer

Official title: A Phase 3 Randomized, Open-label, Multicenter Study to Compare the Efficacy and Safety of Sacituzumab Tirumotecan (Sac-TMT, MK-2870) in Combination With Pembrolizumab Versus Pembrolizumab Alone as First-line Maintenance Treatment in Participants With Mismatch Repair Proficient Endometrial Cancer (TroFuse-033/GOG-3119/ENGOT-en29)

Run by Merck Sharp & Dohme LLC · NCT06952504 · Data updated 2026-11-12

This trial tests whether adding sacituzumab tirumotecan to pembrolizumab helps people with advanced or recurrent mismatch repair–proficient endometrial cancer live longer without their cancer getting worse compared to pembrolizumab alone.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment1123 (estimated)
SponsorMerck Sharp & Dohme LLC
Industry-sponsored
Drugs / interventionschemotherapy, radiation, Sacituzumab, pembrolizumab
Locations271 sites (Mobile, Alabama and 270 other locations)
StatusRecruiting
StartedMay 22, 2025
Main results expectedMay 24, 2032
Study endsMay 24, 2032
Registry record updatedNovember 10, 2026
Trial IDNCT06952504 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with histologically confirmed advanced or recurrent endometrial carcinoma that is mismatch repair–proficient, with radiographically evaluable disease and limited or no prior systemic therapy as allowed by the protocol.

Probably not a fit

Patients with mismatch repair–deficient disease, those unable to receive platinum chemotherapy or PD-1 blockade, or those who do not meet the trial's prior-therapy criteria are unlikely to be eligible or benefit from this specific trial.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

All participants receive an initial induction phase of six three-week cycles of pembrolizumab combined with carboplatin plus paclitaxel or docetaxel. Participants whose disease does not progress after induction enter a maintenance phase and are randomly assigned to pembrolizumab with sacituzumab tirumotecan or pembrolizumab alone. Participants whose disease progresses may enter a subsequent treatment phase and be randomized to pembrolizumab plus sacituzumab tirumotecan or sacituzumab tirumotecan alone. The main goal is to compare length of time without disease progression and overall survival between the randomized groups.

Why it matters

Potential benefit: If successful, the combination could extend the time patients live without progression and possibly improve overall survival by delivering targeted chemotherapy alongside immune therapy.

How similar studies have gone: Combining antibody–drug conjugates with PD-1 inhibitors has shown promising early-phase signals in other tumor types, but this specific sacituzumab tirumotecan plus pembrolizumab approach in pMMR endometrial cancer is largely untested in late-phase trials.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key inclusion criteria include but are not limited to:

* Has a histologically confirmed diagnosis of primary advanced or recurrent endometrial carcinoma that has been confirmed as proficient mismatch repair (pMMR)
* Has radiographically evaluable disease, with measurable Stage III or either measurable or non-measurable Stage IV or recurrent disease per Response Evaluation Criteria In Solid Tumors version 1.1 (RECIST 1.1), as assessed by the investigator
* Has received no prior systemic therapy for endometrial carcinoma except the following conditions as pre-specified by the protocol: 1 prior line of systemic platinum-based adjuvant and/or neoadjuvant chemotherapy in the setting of curative-intent, prior radiation with or without radiosensitizing chemotherapy if \>2 weeks before the start of induction treatment, or prior hormonal therapy for treatment of endometrial carcinoma that was discontinued ≥1 week before the start of induction treatment

Key exclusion criteria include but are not limited to:

* Has carcinosarcoma, neuroendocrine tumors or endometrial sarcoma, including stromal sarcoma, leiomyosarcoma, adenosarcoma, or other types of sarcomas
* Has endometrial carcinoma of any histology that is mismatch repair deficient (dMMR)
* Is a candidate for debulking surgery resulting in complete removal of all tumor and no evidence of radiological disease following surgery, or curative-intent radiotherapy at the time of enrollment
* Has a history of documented severe dry eye syndrome, severe Meibomian gland disease and/or blepharitis, or severe corneal disease that prevents/delays corneal healing
* Has active inflammatory bowel disease requiring immunosuppressive medication or previous history of inflammatory bowel disease
* Has uncontrolled, significant cardiovascular disease or cerebrovascular disease
* Human Immunodeficiency Virus-infected participants with a history of Kaposi's sarcoma and/or Multicentric Castleman's Disease
* Received prior therapy in any setting with any of the following: anti-programmed cell death 1 protein, anti-programmed cell death ligand 1, anti-programmed cell death ligand 2 agent, or with an agent directed to another stimulatory or coinhibitory T-cell receptor; trophoblast cell surface antigen 2-targeted antibody drug conjugate; or topoisomerase I inhibitor-containing antibody drug conjugate

Where it's running

  • University of South Alabama, Mitchell Cancer Institute ( Site 6033)
    Mobile, Alabama, United States
    Recruiting
  • Alaska Women's Cancer Care ( Site 6036)
    Anchorage, Alaska, United States
    Recruiting
  • CHAO Family Comprehensive Cancer Center and Ambulatory Care ( Site 5014)
    Irvine, California, United States
    Recruiting
  • University of California, Irvine (UCI) Health - UC Irvine Medical Center ( Site 6020)
    Orange, California, United States
    Recruiting
  • Sansum Clinic (Ridley Tree) ( Site 8007)
    Solvang, California, United States
    Recruiting
  • John Muir Health Cancer Center ( Site 6028)
    Walnut Creek, California, United States
    Recruiting
Show 44 more locations
  • Yale University School of Medicine ( Site 6009)
    New Haven, Connecticut, United States
    Recruiting
  • MedStar Washington Hospital Center ( Site 5005)
    Washington D.C., District of Columbia, United States
    Recruiting
  • Florida Cancer Specialists - South ( Site 7003)
    Fort Myers, Florida, United States
    Recruiting
  • UF Health Davis Cancer Pavilion and Shands Med Plaza ( Site 6026)
    Gainesville, Florida, United States
    Recruiting
  • Mount Sinai Braman Comprehensive Cancer Center ( Site 6031)
    Miami Beach, Florida, United States
    Recruiting
  • AdventHealth Orlando-AdventHealth Medical Group Gynecological Oncology ( Site 6002)
    Orlando, Florida, United States
    Recruiting
  • Florida Cancer Specialists ( Site 7002)
    St. Petersburg, Florida, United States
    Recruiting
  • Florida Cancer Specialists East ( Site 7001)
    West Palm Beach, Florida, United States
    Recruiting
  • St. Joseph's/Candler Health System ( Site 6021)
    Savannah, Georgia, United States
    Recruiting
  • University of Chicago Medical Center ( Site 5002)
    Chicago, Illinois, United States
    Recruiting
  • Parkview Research Center ( Site 6008)
    Fort Wayne, Indiana, United States
    Recruiting
  • Women's Cancer Care ( Site 6010)
    Covington, Louisiana, United States
    Recruiting
  • TRIALS 365 ( Site 6005)
    Shreveport, Louisiana, United States
    Recruiting
  • Maine Medical Center - Scarborough Campus ( Site 6042)
    Scarborough, Maine, United States
    Recruiting
  • Tufts Medical Center ( Site 6052)
    Boston, Massachusetts, United States
    Recruiting
  • Minnesota Oncology Hematology, PA ( Site 8003)
    Minneapolis, Minnesota, United States
    Recruiting
  • St. Dominic's Hospital ( Site 5004)
    Jackson, Mississippi, United States
    Recruiting
  • Washington University - School of Medicine ( Site 5006)
    St Louis, Missouri, United States
    Recruiting
  • The Center of Hope ( Site 5018)
    Reno, Nevada, United States
    Recruiting
  • Holy Name Medical Center ( Site 6011)
    Teaneck, New Jersey, United States
    Recruiting
  • University of New Mexico Comprehensive Cancer Center ( Site 6046)
    Albuquerque, New Mexico, United States
    Recruiting
  • Perlmutter Cancer Center at NYU Langone Hospital - Long Island ( Site 6055)
    Mineola, New York, United States
    Recruiting
  • Laura and Isaac Perlmutter Cancer Center at NYU Langone ( Site 6004)
    New York, New York, United States
    Recruiting
  • Memorial Sloan Kettering Cancer Center ( Site 6053)
    New York, New York, United States
    Recruiting
  • Duke Cancer Institute ( Site 6049)
    Durham, North Carolina, United States
    Recruiting
  • FirstHealth of the Carolinas ( Site 6037)
    Pinehurst, North Carolina, United States
    Recruiting
  • Miami Valley Hospital South ( Site 6014)
    Centerville, Ohio, United States
    Recruiting
  • University of Cincinnati Medical Center ( Site 5013)
    Cincinnati, Ohio, United States
    Recruiting
  • The James Cancer Hospital and Solove Research Institute at The Ohio State University Comprehensive C ( Site 6007)
    Columbus, Ohio, United States
    Recruiting
  • Kettering Health Main Campus-Kettering Health Cancer Center ( Site 5001)
    Kettering, Ohio, United States
    Recruiting
  • University of Oklahoma Health Sciences Center, Stephenson Cancer Center ( Site 6012)
    Oklahoma City, Oklahoma, United States
    Recruiting
  • Oklahoma Cancer Specialists and Research Institute, LLC ( Site 6047)
    Tulsa, Oklahoma, United States
    Recruiting
  • Oncology Associates of Oregon, P.C. ( Site 8005)
    Eugene, Oregon, United States
    Recruiting
  • St. Luke's University Health Network ( Site 6041)
    Bethlehem, Pennsylvania, United States
    Recruiting
  • Hospital of the University of Pennsylvania ( Site 5007)
    Philadelphia, Pennsylvania, United States
    Recruiting
  • AHN West Penn Hospital ( Site 6006)
    Pittsburgh, Pennsylvania, United States
    Recruiting
  • Women & Infants Hospital ( Site 5003)
    Providence, Rhode Island, United States
    Recruiting
  • Erlanger Medical Center ( Site 5009)
    Chattanooga, Tennessee, United States
    Recruiting
  • Texas Oncology - DFW ( Site 8004)
    Fort Worth, Texas, United States
    Recruiting
  • Houston Methodist Hospital ( Site 6057)
    Houston, Texas, United States
    Recruiting
  • Texas Oncology-San Antonio Medical Center ( Site 8001)
    San Antonio, Texas, United States
    Recruiting
  • Texas Oncology - Northeast Texas ( Site 8002)
    Tyler, Texas, United States
    Recruiting
  • Texas Oncology - Gulf Coast ( Site 8006)
    Webster, Texas, United States
    Recruiting
  • Inova Schar Cancer Institute ( Site 6003)
    Fairfax, Virginia, United States
    Recruiting

+221 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.